National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

St Clair County International Airport (KPHN)

Lat: 42.91°NLon: 82.53°WElev: 636ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Saint Clair MI

  • This Afternoon

    This Afternoon: Mostly cloudy, with a steady temperature around 51. West wind around 6 mph.

    High: 51 °F

    Mostly Cloudy

  • Tonight

    Tonight: Cloudy during the early evening, then gradual clearing, with a low around 41. Calm wind becoming southwest 5 to 8 mph in the evening.

    Low: 41 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Sunny, with a high near 60. West northwest wind 8 to 10 mph, with gusts as high as 18 mph.

    High: 60 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 34. West northwest wind around 5 mph becoming calm in the evening.

    Low: 34 °F

    Partly Cloudy

  • Veterans Day

    Veterans Day: A chance of rain after 1pm. Mostly cloudy, with a high near 53. Light and variable wind. Chance of precipitation is 30%.

    High: 53 °F

    Mostly Cloudy
    then Chance
    Rain

  • Wednesday Night

    Wednesday Night: A chance of rain. Cloudy, with a low around 39. Chance of precipitation is 50%.

    Low: 39 °F

    Chance Rain

  • Thursday

    Thursday: Rain likely. Cloudy, with a high near 47. Chance of precipitation is 60%.

    High: 47 °F

    Rain Likely

  • Thursday Night

    Thursday Night: Rain likely, mainly after 1am. Cloudy, with a low around 31.

    Low: 31 °F

    Rain Likely

  • Friday

    Friday: Rain and snow likely, becoming all rain after 1pm. Mostly cloudy, with a high near 41.

    High: 41 °F

    Rain/Snow
    Likely

Detailed Forecast

This Afternoon
Mostly cloudy, with a steady temperature around 51. West wind around 6 mph.
Tonight
Cloudy during the early evening, then gradual clearing, with a low around 41. Calm wind becoming southwest 5 to 8 mph in the evening.
Tuesday
Sunny, with a high near 60. West northwest wind 8 to 10 mph, with gusts as high as 18 mph.
Tuesday Night
Partly cloudy, with a low around 34. West northwest wind around 5 mph becoming calm in the evening.
Veterans Day
A chance of rain after 1pm. Mostly cloudy, with a high near 53. Light and variable wind. Chance of precipitation is 30%.
Wednesday Night
A chance of rain. Cloudy, with a low around 39. Chance of precipitation is 50%.
Thursday
Rain likely. Cloudy, with a high near 47. Chance of precipitation is 60%.
Thursday Night
Rain likely, mainly after 1am. Cloudy, with a low around 31.
Friday
Rain and snow likely, becoming all rain after 1pm. Mostly cloudy, with a high near 41.
Friday Night
A chance of rain and snow. Mostly cloudy, with a low around 30.
Saturday
A chance of rain and snow. Partly sunny, with a high near 42.
Saturday Night
Mostly cloudy, with a low around 30.
Sunday
Partly sunny, with a high near 46.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Clair MI
 42.84°N 82.5°W (Elev. 630 ft)
Last Update:
3:24 pm EST Nov 9, 2026
Forecast Valid:
4pm EST Nov 9, 2026-6pm EST Nov 15, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation